415029 (2011 UL21)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6537389222 ± 3.55e-09
Semi-major axis (a)2.1223846854 AU ± 1.41e-09
Inclination (i)34.88596290° ± 1.62e-06
Long. of Asc. Node (Ω)275.31456377° ± 3.69e-07
Arg. of Perihelion (ω)284.98018604° ± 9.13e-07
Mean Anomaly (M)177.74570784° ± 2.01e-07
Mean Motion (n)0.3187690303°/day ± 3.18e-10
Perihelion dist (q)0.73489921 AU ± 7.55e-09
Aphelion dist (Q)3.50987016 AU ± 7.89e-09
Orbital Period3.09197629 yr ± 3.09e-09
Physical Parameters
H (abs. magnitude)15.93
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.218″
Uncertainty0
Orbit TypeApollo
MOID0.015855 AU
Observations Used3235
Radar Obs Used3
Oppositions24
Arc Total1989-2024
First Observation Used1989-10-29
Last Observation Used2024-09-28
Observations (4304)
Date Type RA Dec Mag Band Observatory
2017-11-02 14:00:38 C 08 05 30.99 +32 02 28.8 T05
2017-11-02 14:13:56 C 08 05 31.69 +32 02 22.1 T05
2017-11-02 14:16:22 C 08 05 31.86 +32 02 20.5 T05
2017-11-02 14:28:35 C 08 05 32.55 +32 02 14.1 T05
2017-11-02 14:31:04 C 08 05 32.69 +32 02 13.3 T05
2017-11-02 14:43:16 C 08 05 33.42 +32 02 06.3 T05
2017-11-02 14:45:16 C 08 05 33.50 +32 02 05.3 T05
2017-11-02 15:01:48 C 08 05 34.39 +32 01 56.4 T05
2017-11-06 13:46:34 C 08 10 59.71 +31 07 58.5 U T05
2017-11-06 14:00:06 C 08 11 00.44 +31 07 50.4 U T05
2017-11-06 14:07:11 C 08 11 00.82 +31 07 45.6 U T05
2017-11-06 14:23:29 C 08 11 01.68 +31 07 36.2 U T05
2017-11-14 07:49:46 C 08 20 55.95 +29 02 15.4 U 703
2017-11-14 07:57:07 C 08 20 56.30 +29 02 09.9 U 703
2017-11-14 08:04:30 C 08 20 56.68 +29 02 04.5 U 703
2017-11-14 08:11:54 C 08 20 57.03 +29 01 58.9 U 703
2017-11-14 10:26:43 C 08 21 03.60 +29 00 17.9 U G96
2017-11-14 10:35:42 C 08 21 04.04 +29 00 11.2 U G96
2017-11-14 10:44:39 C 08 21 04.47 +29 00 04.3 U G96
2017-11-14 10:53:36 C 08 21 04.90 +28 59 57.6 U G96
2017-11-16 14:08:20 C 08 23 37.44 +28 19 37.0 U T08
2017-11-16 14:22:51 C 08 23 38.12 +28 19 25.1 U T08
2017-11-16 14:37:33 C 08 23 38.76 +28 19 13.2 U T08
2017-11-16 14:53:39 C 08 23 39.51 +28 19 00.3 U T08
2017-11-17 04:05:04 C 08 24 17.87 +28 08 04.8 q 160
2017-11-17 04:08:02 C 08 24 17.99 +28 08 02.1 q 160
2017-11-17 04:11:01 C 08 24 18.14 +28 07 59.7 q 160
2017-11-18 12:31:40 C 08 25 50.62 +27 40 31.8 U 703
2017-11-18 12:39:30 C 08 25 51.00 +27 40 25.1 U 703
2017-11-18 12:47:19 C 08 25 51.36 +27 40 18.2 U 703
2017-11-20 04:51:01 C 08 27 43.00 +27 04 27.2 17.6 q J43
2017-11-20 05:03:39 C 08 27 43.54 +27 04 15.6 17.6 q J43
2017-11-20 05:16:21 C 08 27 44.09 +27 04 04.0 17.6 q J43
2017-11-20 05:28:57 C 08 27 44.64 +27 03 52.4 17.6 q J43
2017-11-20 13:59:07 C 08 28 08.02 +26 56 00.4 U T08
2017-11-20 14:13:26 C 08 28 08.63 +26 55 47.4 U T08
2017-11-20 14:26:49 C 08 28 09.19 +26 55 34.6 U T08
2017-11-20 14:41:02 C 08 28 09.80 +26 55 21.2 U T08
2017-11-22 10:27:33 C 08 30 06.65 +26 13 04.7 U 703
2017-11-22 10:36:53 C 08 30 07.02 +26 12 55.3 U 703
2017-11-22 10:46:13 C 08 30 07.43 +26 12 46.3 U 703
2017-11-22 10:55:29 C 08 30 07.84 +26 12 36.9 U 703
2017-11-22 14:36:50 C 08 30 17.36 +26 08 57.8 U T05
2017-11-22 14:50:55 C 08 30 17.91 +26 08 43.4 U T05
2017-11-22 15:03:36 C 08 30 18.42 +26 08 30.4 U T05
2017-11-22 15:17:37 C 08 30 19.01 +26 08 16.7 U T05
2017-11-23 01:21:31 C 08 30 45.63 +25 58 02.7 d Z35
2017-11-23 01:41:32 C 08 30 46.38 +25 57 41.1 d Z35
2017-11-24 13:45:01 C 08 32 17.57 +25 19 57.1 U T08
2017-11-24 13:57:48 C 08 32 18.06 +25 19 43.6 U T08
Radar Observations (3)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2024-06-26 23:40:00 46095708 20 us 8560 -14 -14
2024-06-27 00:10:00 46009798 2 us 8560 -14 -14
2024-06-29 02:00:00 47980230.07 3 us 8560 -14 -14
Station codes
-14 DSS-14 Goldstone (70-m)